<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<title>别踩白块</title>
	<link rel="stylesheet" href="./blacl.css">
    <script src="./black.js"></script>
</head>
<body>
	<h2>score</h2>
	<h2 id="score">0</h2>
	<div id="main">
		<div id="con"></div>
	</div>
	<div class="btn">
		<button class="start" onclick="start()">开始游戏</button>
	</div>
</body>
</html>